Issue #1823 has been updated by kouji (Kouji Takao).

Status changed from Assigned to Rejected

Sorry, late reply.

I'm going to implement Readline.pre_input_hook, Readline.insert_text and Readline.redisplay. These are wrapper for rl_pre_input_hook, rl_insert_text and rl_redisplay.
So I think you will be able to implement a proc which you want.

So, I closed this issue.
Thanks.

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Feature #1823: Readline Command Completion
https://bugs.ruby-lang.org/issues/1823#change-26342

Author: scrapcoder (Bryan Richardson)
Status: Rejected
Priority: Normal
Assignee: kouji (Kouji Takao)
Category: ext
Target version: 2.0.0


=begin
 Readline lets you specify a character to append to the end of the string after command completion has succeeded (i.e. a space after a matched command or a '/' after a matched directory).  In the command completion proc, I'm providing an array comprised of available commands in the application as well as a list of possible directories given the string provided (i.e. Dir[str + '*']).  Thus, depending on what the string is determined to be (a command, a directory, or a file), I'd like to assign either a space or a '/' as the append character.
 
 The easiest way I see to do this is to be able to provide a proc to the Readline.completion_append_character variable rather than a string, and have the completed command string passed to the proc.  This way, one can determine if the string is a command, a directory, or a file and return the appropriate append string.  I would provide a patch, but I'm not a solid enough C coder to even attempt this... sorry!
=end



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